Talon 08 Head Diameter (mm): 0.8 Head Length (mm): 4.2 Overall Length (mm): 19.5 Talon 10 Head Diameter (mm): 1.0 Head Length (mm): 4.2 Overall Length (mm): 19.5 Talon 12 Head Diameter (mm): 1.2 Head Length (mm): 4.2 Overall Length (mm): 19.5